Elevator-door.



Patented Nov. 20, I900.

2 Sheets-Sheet I.

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:25 b) c 41 W N w 3 wm Paiented Nov. 20, I900.. E. RUBBERT.

ELEVATOR DOOR.

(Application filed Aug. 2, 1900.)

2 Sheds-Sheet 2.

(No Model.)

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m m w Um iJNtTE ERNEST RUBBERT, OF MINNEAPOLIS, MINNESOTA.

ELEVATOR-DOOR.

SPECIFICATION forming part of Letters Patent No. 662,095, dated November 20, 1900.

Application filed August 2, 1900. Serial No. 25.614. (No model.)

To all ZUhOWb it nutty concern.-

Be it known that I, ERNEST RUBBERT, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Elevator-Doors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improvement in sliding doors such as are used to close the entrances to elevator-shafts or wells; and to this end it consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 indicates a front elevation of a portion of an elevator shaft or well having one of my improved sliding doors applied thereto. Fig. 2 is a horizontal section on the line 00 of Fig. 1, some parts being broken away, showing the extensible sliding door as closed. Fig. 3 is a detail, partly in front elevation, with some parts broken away and others indicated by dotted lines, showing the door as opened; and Fig. 4 is a horizontal section on the line 09 00 of Fig. 3.

The numeral 1 indicates the inclosing frame orcase of the shaft or well, the same, as shown, being made up of a skeleton framework having at its front side rigid sections 2 and 3, between which a wide door-opening 4 is provided. Extending over the door-opening 4 and over the rigid sections 2 and 3 is a pair of suitably'supported rails 6.

The door is made up of two sections 7 and 8, mounted to slide side by side and the lat ter to overlap with the rigid section 3 when the door is folded or open. These door-sections 7 and 8 are also of open skeleton ironwork, and they are suspended for sliding movements by means of brackets 9, having rollers 10, that work on the rails 6 in the ordinary manner. The objects to be attained by an extensible sliding door of this charac-- ter are a large opening through the shaft into the car and a door which will fold into a small compass and may be extended and folded easily and quickly.

To properly control the opening and closing movements or, in other words, the folding and unfolding movements of the door, I employ a lazy-tongs lever or connection 11, which is pivotally connected at one extremity, as shown, by means of a stud or pin 12 to the outer marginal portion of the rigid frame or case section 3. At its outer joint the lazytongs lever 11 is pivotally connected, as best shown in Fig. 4, to a lug 13 of the door-section 7, and at its intermediate joint it is pivotally connected, as shown, by a stud or pin 14 to the frame of the door-section 8.

The door, made up of the sections 7 and 8, may be very easily slid from its folded or open position (indicated in Figs. 3 and 4) into its distended or closed position, (indicated in Figs. 1 and 2,) and the lazy-tongs lever causes the door-section 7 to travel approximately twice as fast as does the door-section 8. As there are no sliding connections between the door-sections and the lazy-tongs lever, but a very slight friction is added by the application of the said connection. When the door is folded or open, the rigid section 3 and the door-sections 7 and 8 stand side by side in close proximity, and the lazy-tongs lever is folded just back of the door-section 7,as shown in Fig. 4.

It will of course be understood that my invention above described is capable of modi-- fication in its details of construction and in its means of attachment Without departing from the spirit of my invention.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. The combination with an inclosure having a door-opening, of an extensible sliding door made up of sections, and a lazy-tongs lever having at least three alined pivot-joints, with one of said alined pivot-joints pivoted to a fixed support and the others pivoted one to each of said sliding-door sections, and without sliding engagements between the said pivot-joints and the parts to which they are connected, substantially as described.

2. The combination with the case or framework 1 having the rigid sections 2 and 3 spaced to form adoor-opening 4, of the extensible door made up of sections 7 and 8 mounted for sliding movements in vertical planes offset from each other and from the plane of said rigid section 3, and the lazy-tongs lever 11 having the three alined pivot-joints pivoted to said framework or case at 12, pivoted to said door-section 7 at 13, and pivoted to said doorsection 8 at 14, which parts are adapted to be folded and unfolded, substantially as described. [O

In testimony whereof I affix my signature in presence of two witnesses.

ERNEST RUBBER'I.

Witnesses:

M. M. MCGRORY, F. D. MERCHANT. 

